I'm unsure how popular or unpopular opinion this is, but I've been very happy with the current recommendation algorithm. Sure, every now and then something stupid pops up, like today it recommended me the channel of a software engineer where all his videos are of him complaining about his employers, family and how he has it more difficult than anyone. But beyond those hiccups, I've found great channels, videos and even music. I could be the exception but idk...